Papers, Addresses, Reports: Can We Meet the Challenge?; Papers Presented at the 47th Annual Meeting; The Fish Population of the Main Stream of the Big Muddy River; Ecological Factors Affecting the Growth of Smallmouth Bass and Longear Sunfish...

The history of DuPage County is covered through the exploration period, Indian life, pioneer settlement, the Black Hawk War, the Civil War and the development of governing bodies, schools, churches and businesses. There are histories of each...

Papers, Addresses, Reports: Mahlon Loomis, the Discoverer and Inventor of Radio: A Report by the Chairman of the Radio Discovery Committee of the Illinois State Academy of Science; The Stratigraphy of the Cedar City Formation (Middle Devonian)...

Papers, Addresses, Reports: A New Approach to Studies of Culture and Society; Welcome to Augustana; Dedication of Lindahl-Udden Memorial; The Beginning of the Illinois State Academy of Science; The Ligneous Flora of Richland County, Illinois,...

Papers, Addresses, Reports: Recent Developments in the Chemistry of the Rare Earth Group (Address of the Retiring President); The Significance of the Conservation of Land Resources; Classification of Illinois Lands; Soil Erosion Control...

Papers, Symposia, Addresses, Reports: Report of Secretary; Report of Treasurer; Report of Committee on Ecological Survey of State; Address of Welcome; Life and Work of John Ulric Nef; Stellar Photometry; The Determination of Stellar Distances;...

Papers, Symposia, Addresses: The Advantages of a State Academy of Sceince (abstract); History of Former State Natural History Societies of Illinois; Anthropology; Botany; Chemistry; Geology; Physics; Zoology; Biotic Zones and Districts in...

Papers, Addresses, Reports: Research, Its Opportunities and Rewards; Chemical Messengers, A Special Consideration; Contributions of the Physical Sciences to Human Welfare; Extract from the Report of the Section Chairman (Botany); Frederick...

Papers, Addresses, Reports: The Development of Smokeless Fuel from Illinois Coal; The Irwin Expedition about Cerro de Pasco and Lake Titicaca; Preserves of Natural Conditions; Gaining and Losing Power; Report on the Progress and Condition of...

Papers, Addresses, Reports: Some personal responsibilities of scientists (Address of the President); Effect of vacuum pasteurization on the quality of cream produced in southern Illinois; Fluctuations in San Jose scale infestation; Some...

Papers, Symposia, Addresses, Reports: Report of Secretary; Report of Treasurer; Resolutions Concerning State Museum and State Academy; Report of Resolutions Committee; Report of Committee on an Ecological Survey of the State; Report on the...

Papers, Symposia, Addresses, Reports: Secretary's Report; Treasurer's Report; Dr. Amos Willard French, In Memoriam; A Work Needing to be Done by the Academy; The Vegetational History of a Blowout (abstract); Recent Habitat Changes in the...

Papers, Addresses, Reports: On Popularizing Science; Geology of the Joliet District; The Genus Peperomia in Northeastern South America; The American Bithynia Not Wholly an Introduced Species; Growth of Diatoms in Relation to Dissolved Gases;...

Papers: Forest Communities in a Natural Site at Union Hill, and Comparisons With Other Forests in Illinois; The Vegetation of an Abandoned Road After a Half Century of Development; Helminths of Three Sympatric Species of Cave-Dwelling...